Do you really believe they sell stuff in other countries at a great loss? I don't.
The stuff they sell in Africa, you'd regard as old-fashioned medicine, long since superceded by something else (or maybe the same stuff in a new package). They made thier pile in the West, but this provides a steady trail income.
And the stuff they give away in Africa is out-of-date medicine that would otherwise be destroyed.
That may be so, I don't know. But even so, what of it? It's a business. That's what businesses do. If you have a product which people need, or want, you make money. Tons of money, if your smart.
"A casual stroll through the lunatic asylum shows that faith does not prove anything." - Friedrich Nietzsche